package com.grape.utils;

import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * 类描述： IpUtils类
 *
 * @author  putao
 * @email   2628279194@qq.com
 */
public class IpUtils {

    /**
     * 根据请求对象获取出对应的ip，并转为地址
     * @param request       请求对象
     * @return              地理地址
     */
    public static String getIpAddress2(HttpServletRequest request) {
        String ipAddress = null;
        try {
            ipAddress = request.getHeader("x-forwarded-for");
            if ((ipAddress == null) || (ipAddress.length() == 0) || ("unknown".equalsIgnoreCase(ipAddress))) {
                ipAddress = request.getHeader("Proxy-Client-IP");
            }
            if ((ipAddress == null) || (ipAddress.length() == 0) || ("unknown".equalsIgnoreCase(ipAddress))) {
                ipAddress = request.getHeader("WL-Proxy-Client-IP");
            }
            if ((ipAddress == null) || (ipAddress.length() == 0) || ("unknown".equalsIgnoreCase(ipAddress))) {
                ipAddress = request.getRemoteAddr();
                if (ipAddress.equals("127.0.0.1"))
                {
                    InetAddress inet = null;
                    try {
                        inet = InetAddress.getLocalHost();
                    } catch (UnknownHostException e) {
                        e.printStackTrace();
                    }
                    ipAddress = inet.getHostAddress();
                }
            }

            if ((ipAddress != null) && (ipAddress.length() > 15))
            {
                if (ipAddress.indexOf(",") > 0)
                    ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
            }
        }
        catch (Exception e) {
            ipAddress = "";
        }
        return ipAddress;
    }

}
